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The Macromolecules of the Cell
Chapter 3: The Macromolecules of the Cell
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Classes of Proteins Enzymes Structural Motility Regulatory Transport
Hormonal Receptors Defensive Storage
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Amino Acids Amino group Carboxyl (acid) group
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R groups Leucine (Leu) Serine (Ser) Aspartic acid (Asp) Hydrophobic
LE 3-12b R groups Leucine (Leu) Serine (Ser) Aspartic acid (Asp) Hydrophobic Hydrophilic
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Primary Structure Amino acids
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Secondary Structure Amino acids Hydrogen bond Alpha helix
Pleated sheet
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Tertiary Structure Amino acids Hydrogen bond Alpha helix Pleated sheet
Polypeptide (single subunit of transthyretin)
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Quaternary Structure Amino acids Hydrogen bond Alpha helix
Pleated sheet Polypeptide (single subunit of transthyretin) Transthyretin, with four identical polypeptide subunits
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Nucleic Acids Subunit (monomer) is a nucleotide
Blueprints for proteins 2 types DNA – Deoxyribonucleic Acid RNA – Ribonucleic Acid
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Nucleotide Nitrogenous base (A) Sugar Phosphate group
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Nucleotide
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Polysaccharides
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Glucose Fructose Aldosugar Ketosugar
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Fischer Haworth
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Glucose Maltose
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Glycosidic Bonds Alpha Beta
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Polysaccharides STARCH GLYCOGEN CELLULOSE Starch granules in
potato tuber cells Glycogen granules in muscle tissues Cellulose fibrils in a plant cell wall Cellulose molecules GLYCOGEN CELLULOSE STARCH Glucose monomer
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Lipids Fatty Acids Triacylglycerols Phospholipids Glycolipids Steroids
Terpenes
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Fatty Acids
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Triacylglycerols Glycerol Fatty acid
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Phospholipids
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Glycolipids
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Steroids O CH3 C OH O H O
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Cholesterol: The steroid precursor
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Terpenes
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